<p>Current thermochromic materials for smart windows suffer from poor environmental stability, lack of self-healing and recyclability, and susceptibility to contamination. In this study, thermochromic supramolecular ionogels with excellent environmental stability, efficient room-temperature self-healing and recyclability properties, as well as amphiphobic slippery surfaces, are fabricated by incorporating binary ionic liquids into a rationally designed self-healing polyurethane with perfluoroalkyl side chains. The outstanding and stable thermochromic performance of the resulting ionogels stems from the hydrogen bondmediated, confined, and reversible phase separation of ionic liquids within the polyurethane network, enabling the ionogels to effectively reduce indoor temperatures and enhance the comfort of occupants. The surface-enriched perfluoroalkyl side chains enable various liquids, including water, alkanes, and edible oils, to easily slide off the ionogel surface without leaving any residue, preventing the transmittance decrease and thermochromic performance degradation caused by contaminations. The dynamic hydrogen bonds within the polyurethane network enable the ionogels to repeatedly heal physical and chemical damages, as well as to be recycled multiple times without performance loss, thereby reducing maintenance costs and minimizing material waste. This study provides a novel approach to developing advanced thermochromic materials for smart windows, potentially improving the building energy efficiency and sustainability.</p>